actually what it probably is is that since allah cursed the yahood (some of them) to become to apes then later on in history they wanted the world to believe that they also came from apes and they would probably use the proofs from their own brethren of apes and swine to say "see, we told you" to the world

We ARE apes. We have all of the ape qualities: ape skeletal structure, ape musculature, ape fingers and opposable thumbs, apes' stubby little tailbone, apes' wisdom teeth (which don't fit in our flattened ape mouth), and the best evidence is our ape DNA with ape ERVs. We are apes and that's not an insult but a scientific fact.